Hitachi RAS-8FSXN - Page 127

Specification for the main component requirements:
Components Specifications Remarks
Auxiliary relay (*)
High power relay, LY2F DC 12 V
made by OMRON
—
3-pin connector cable
PCC-1A (connected to a JST,
XARP-3 connector)
5 cables with connectors in a single
assembly
Cable
(Inside the unit)
Low voltage 0.3 mm
2
less than 24 V
220/240 V 0.5 to 0.75 mm
2
—
Cable
(Outside the unit)
Low voltage 0.5 to 0.75 mm
2
less than 24 V
220/240 V 2 mm
2
—
N O T E
(*) Do not use the relays made with diodes.
¿ Operation signal (Control function number 1)
This function is used to receive the operation signal.
• The auxiliary
contact relay (RYa) is closed during the operation. The operation signal is sent to output terminals when
the indoor units (or a single indoor unit) are operating. This function can be used for the circulation or humidification
operation.
• Terminals 1 and 2 (output 1) of the CN16 to set the operation signal.
a Auxiliary relay
b 3-pin connector
c Connector CN16
d Outdoor unit PCB1
¿ Alarm signal (Control function number 2)
This function is used to receive the alarm signal.
•
The auxiliary contact relay (RYa) is closed when the alarm occurs.
• The alarm signal will be sent to output terminals when the indoor units (or a single indoor unit) are operating and an
alarm occurs in the system.
• Terminals 1 and 3 (output 2) of the CN16 to set the alarm signal.
a Auxiliary relay
b 3-pin connector
c Connector CN16
d Outdoor unit PCB1
¿ Compressor ON signal (Control function number 3)
This function is used to receive the compressor operation signal.
•
The auxiliary contact relay (RYa) is closed during the compressor operation.
• Terminals 1 and 3 (output 2) of the CN16 to set the compressor ON signal.
1 2
CN16
RYa
RY
1 2 3
a
b
c
d
1 3
CN16
RYa
RY
b
c
a
d
1 2 3
6 Optional functions
121
SMGB0065 rev. 1 - 12/2010
6